18785852025860 has 12 divisors (see below), whose sum is σ = 39450289254348. Its totient is φ = 7514340810336.

The previous prime is 18785852025859. The next prime is 18785852025883. The reversal of 18785852025860 is 6852025858781.

It can be written as a sum of positive squares in 2 ways, for example, as 2692933512256 + 16092918513604 = 1641016^2 + 4011598^2 .

It is a super-2 number, since 2×18785852025860² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469646300627 + ... + 469646300666.

It is an arithmetic number, because the mean of its divisors is an integer number (3287524104529).

Almost surely, 2^{18785852025860} is an apocalyptic number.

18785852025860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18785852025860 is an abundant number, since it is smaller than the sum of its proper divisors (20664437228488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18785852025860 is a wasteful number, since it uses less digits than its factorization.

18785852025860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939292601302 (or 939292601300 counting only the distinct ones).

The product of its (nonzero) digits is 86016000, while the sum is 65.

The spelling of 18785852025860 in words is "eighteen trillion, seven hundred eighty-five billion, eight hundred fifty-two million, twenty-five thousand, eight hundred sixty".